Multifunction Smart Regulator with Lamp/Relay Diagnostic Driver

The L9911 is a monolithic multifunction alternator voltage regulator intended for use in automotive application.

It includes the control section, the field power stage, fault diagnostic circuit which drives a warning lamp, and the protection against short circuits.

Key Features

  • Fully monolithic design
  • High side field driver
  • Thermal protection
  • Field short circuit protection
  • Protected diagnostic lamp driver
  • Protected high side relay driver
  • Complex diagnostics
  • Load response control
  • DFM output (field monitor)
  • Self start function

Design

Technical Documentation

Product Specifications
Description Version Size
DS4125 DS4125: Car alternator multifunction smart voltage regulator 13.0 427 KB

Sample & Buy

Part Number Package Packing Type Operating Temperature (°C) (min) Operating Temperature (°C) (max) Marketing Status Unit Price (US$) * Quantity ECCN (EU) ECCN (US) Country of Origin More info Order from ST Order from Distributors
L9911K MW 8L Tube - - Active 5.39 1000 NEC EAR99 MOROCCO MORE INFO DISTRIBUTOR AVAILABILITY
L9911U MW 8L Tube - - Active 5.39 1000 NEC EAR99 MOROCCO MORE INFO
L9911P MW 8L Tube - - Active 3.85 1000 NEC EAR99 MOROCCO MORE INFO DISTRIBUTOR AVAILABILITY
L9911F MW 8L Tube - - Active 5.39 1000 NEC EAR99 - MORE INFO
L9911V MW 8L Tube - - Active 5.39 1000 NEC EAR99 MOROCCO MORE INFO DISTRIBUTOR AVAILABILITY
L9911I MW 8L Tube - - Active 5.39 1000 NEC EAR99 MOROCCO MORE INFO DISTRIBUTOR AVAILABILITY
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(*) Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For quotes, prices in local currency, please contact your local ST Sales Office  or our Distributors

Quality & Reliability

Part Number Marketing Status Package Grade RoHS Compliance Grade Material Declaration**
L9911K ActiveMW 8LAutomotiveEcopack1 0
L9911U ActiveMW 8LAutomotiveEcopack1 0 0
L9911P ActiveMW 8LAutomotiveEcopack1
L9911F ActiveMW 8LAutomotiveEcopack1
L9911V ActiveMW 8LAutomotiveEcopack1
L9911I ActiveMW 8LAutomotiveEcopack1
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(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.

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